The United States Senate Democratic Conference Secretary, also called the Caucus Secretary, is a ranking leadership position within the Democratic Party in the United States Senate. It was previously considered the number-three position, behind the party's floor leader and the party's whip, until in 2006, when Democratic leader Harry Reid created the new position of Vice-Chairman of the caucus. Now, the secretary is the fourth-highest ranking position. The conference secretary is responsible for taking notes and aiding the party leadership when senators of the party meet or caucus together.[1]

The first conference secretary was Sen. Edward W. Carmack of Tennessee, who was elected in March 1903.[2]